Method of contraception

Details Method of contraception Method of contraception

1995-04-21

1995-12-05

Brown, Michael A.

Surgery

Male reproductory tract shields or birth control devices

128843, A61F 602

Patent

active

054719976

ABSTRACT:
Conception is prevented in male mammals by making an incision in one wall of the vas deferens near the epididymis and inserting a filament into the vas deferens through the incision. The filament has a length at least about one-fourth the length of the vas deferens and an outside diameter about equal to the inside diameter of the vas deferens. It contains an enlargement at one end and is made of a material inert to tissue. The filament is inserted into the vas deferens all the way to the enlargement. The incision remains open around the filament to permit sperm to escape from the vas deferens.

REFERENCES:
patent: 3589355 (1971-06-01), Lee
patent: 3687129 (1972-08-01), Nuwayser
patent: 3815578 (1974-06-01), Bucalo
patent: 3990434 (1976-11-01), Free
patent: 4013063 (1977-03-01), Bucalo
patent: 4200088 (1980-04-01), Denniston
patent: 4512342 (1985-04-01), Zaneveld
patent: 4682592 (1987-07-01), Thorsgard

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